thank you. But the problem is, that the Database Connection Information(url, password, username..) are retrievied at runtime of the application. so i can not configure a second, third.. database in a configuration file. at Application start i have the following databasase defined in JBoss-Beans.xml(i'm using tomcat 6.0 server) : <?xml version="1.0" encoding="UTF-8"?> <deployment xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:jboss:bean-deployer bean-deployer_1_0.xsd" xmlns="urn:jboss:bean-deployer"> com.microsoft.sqlserver.jdbc.SQLServerDriver jdbc:sqlserver://localhost:1500;databaseName=Userdatabase user user java:/ZDBsource 0 10 1000 100000 This datasource will be queried to gain the Datasource Connection Information to another Database. At this point i must programatically establish the Connection to that second Database. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089605#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...